42875878 has 4 divisors (see below), whose sum is σ = 64313820. Its totient is φ = 21437938.

The previous prime is 42875869. The next prime is 42875881. The reversal of 42875878 is 87857824.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10718968 + ... + 10718971.

It is an arithmetic number, because the mean of its divisors is an integer number (16078455).

Almost surely, 2^42875878 is an apocalyptic number.

42875878 is a deficient number, since it is larger than the sum of its proper divisors (21437942).

42875878 is a wasteful number, since it uses less digits than its factorization.

42875878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21437941.

The product of its digits is 1003520, while the sum is 49.

The square root of 42875878 is about 6547.9674709027. The cubic root of 42875878 is about 350.0023890993.

The spelling of 42875878 in words is "forty-two million, eight hundred seventy-five thousand, eight hundred seventy-eight".